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Ultrashort pulsed kW-class laser with unprecedented flexible GHz burst operation for high precision high-throughput industrial manufacturing

Objective

The next generation of material processing machines need to deliver higher precision, throughput and flexibility. Current ultrafast laser technology has demonstrated applicability for enabling high precision micromachining, but current throughput is not efficient enough for widescale industrial manufacturing and the parameters of existing lasers are not flexible enough to consistently work in the optimal conditions necessary to minimize heat-affected zone while using all of the available laser power. kW-flexiburst will develop a breakthrough laser technology using a new concept of <1 ps multi GHz seed oscillator operated in burst mode that will be amplified to 1 kW. This new oscillator can flexibly generate any burst shape, intra-burst number of pulses, at a quasi-arbitrary burst repetition rate and quasi-arbitrary intra-burst repetition rate within an unprecedented GHz range. The new range of intra-burst repetition rate, in the multi>GHz regime, will enable ultrahigh ablation rates. The flexibility offered in terms of pulse number (1 with high energy to >2000 with low energy) will also support flexible switching between optimal ablation and optimal ablation rate to achieve unprecedented laser micro-processing throughput. The ability to continuously modify the repetition rates is an ideal tool for industrial production as it enables precise adaptation of the local fluence to match optimal conditions where ablation efficiency is maximal, heat affected zone is minimal and surface finish is best. kW-flexiburst will demonstrate this concept in applications ranging from transparent materials cutting and drilling to metal surface texturing. Closed-loop monitoring and advanced synchronisation will enable parameter optimisation for temporal burst shaping and spatial beam shaping for highest productivity in micro-processing and large surface texturing. Safety issues regarding X-ray generation at kW class powers will also be thoroughly addressed.
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Coordinator

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS

Address

Rue Michel Ange 3
75794 Paris

France

Activity type

Research Organisations

EU Contribution

€ 806 250

Participants (6)

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UNIVERSITAET STUTTGART

Germany

EU Contribution

€ 1 253 750

HIGH Q LASER GMBH

Austria

EU Contribution

€ 760 741,25

UNIVERSITE DE BORDEAUX

France

EU Contribution

€ 891 720

GFH GMBH

Germany

EU Contribution

€ 634 625

DAETWYLER GRAPHICS AG

Switzerland

EU Contribution

€ 681 742,50

MODUS RESEARCH AND INNOVATION LIMITED

United Kingdom

EU Contribution

€ 91 250

Project information

Grant agreement ID: 825246

Status

Ongoing project

  • Start date

    1 January 2019

  • End date

    31 December 2022

Funded under:

H2020-EU.2.1.1.

  • Overall budget:

    € 5 120 078,75

  • EU contribution

    € 5 120 078,75

Coordinated by:

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS

France